Metal fastener.



H. KLEIN.

METAL FASTENER.

APPLICATION. FILED ocr. 6. m5.

1,237,344. mama Mg. 1, 1-917;

x mm

a fastener f embodying 1 my invention ,The metal fastener of myinvention em g bodies a body or shank of an suitable UNITED sr TnsrAr nT orrion rrnnnriinnm, or

To aZZwhom it may concern: c a q Be it known that I, nnnY KmirNfa"citizcnof the United Stategp'residing. at New York, county of New York; and States of New" York have invented certain [new j and useful Improvementsin' Metal Fasteners; v of which the following is a specification. This invention relates to certain improvements .in metal fastening devices; and the objects and nature ofthe invention'willgbe readily iiiiderstood by those skilled in the art in thelightof the following explanation; of the accompanying drawings illus-i crating WhatI now believe to be the prefer-red embodiments or nic'chanical expres sions of my invention from among other forms, constructiOnS, arrangemei'its "and adaptations falling .within the. spirit and scope of the appended claims i Anfobject ofithe invention: isto provide certainimprovements in metal fastening" or connecting devices particularly designed for use inwood work in connecting parts there of for the production of structuralelements,

or in the formation of supporting parts adapted to bexfastened toowood work.

A fnrther object of the inventionpis to provide a double end fastening or connect ing device so formed and constructed as to be capable of rigidly connectingfltwo wood members against separation while main taining them spaced a fixed distance apart 1 andiiwhich can be readily-forced, into the wood members and then locked or anchored therein against separatlon therefrom",

i The invention lconsists in certain novel;

features in construction and arrangement as more fully and particularly'jset forth and pointed out hereinafterhk Referringto the accompanying drawings: Figure 1,;is a perspectiveviewofa structural element embodying myinventionfx 1 a 1 Figsiflt 3;andv4 are viewe 's illustrating steps themethod followed in connecting the wood members by'the fasteners to form a structural element. g Figs. 5 and 6; are detail views. n Fig 7,o is adetail perspective view of a shape, form and dimensions having arelatively reduced "penetrating and anchoring portion 'proj ecting therefrom ,'.and integral therewith and consisting of a comparatively small, straight cylindriealn 0k having. a

mn ranrasrnnnn i915] seriarn ai ees.

enlarged to constitute an" anchor. The body portionprovides a, square or flat edge or shoulderto limit the distance S2116; pene trating portion extends intothe Wood memi it 'S'mmmmLetterman Patented A110. 21, 191v. 1" p m 'fiiedbeater6, I v n chisel-like penetrating end "head laterally lateral play or looseness with respect thereto 1 and to aid in maintaining the fastener inits fixed perpendicular position with re'spectt it thesurfaceofthe Wood member I In the particular embodiment illustrated,

thebo'dyf1 is formed"integrahwith the:

alined similar opposite end penetrating and 1' anchoring portions. Each such portion consists of "the straight cylindrical comparatively'short neck 2', t'e'rminatin'gin a tapered beveled or chiselrlike driving or penetrating extremity which is laterally eXt'eI t0 producefan anchoring or arrow head 3 This head is formed with twoopposite flat or beveled side facesterminating in the con- 3 verging chiselor cutting edges 3, that'm'eet to form the central penetrating point 3". The two diametricallyopposite fiat, wings which form the lateral enlargement at the endof and with respect to th'e'neck to provide the anchoring barbs of the head, preferablyf taper outwardly; 0. their top and; bottonr'edges 3, 3 converge outwardly and neet atfpoints 3. The top edges 3, are

comparatively wide or blunt to resist retrograde: or outward movement through the wood: when the device has been anchored therein. These edges 8, also provide cutting edges or comparatively sharp corners extendingapproximately from the neck to the 'oppositepoints 3 to facilitate the action of the heads in forcing their way, through the wood toanchoring positions a when the fastening devices are partially'ro-. tatedafter their penetrating and anchoring portions havefl'been forced intothe wood members. The neclcof each penetrating andfanchoringportion is -preferably ofia reduced diameter with respect to the thickofthe fastener are in alinementandf hence the commona-Xis thereoffconstitutesor is in alinement with theraxis'of the bodyfin ness}.orfnarrowest width of the body and the ends of the body form square. or flat "end shoulders. 1?; approximately at I right. angles f to the axis of the necks and adaptedjto squarely and tightly abut the adjacent snrfaces. of the wood members. f The two necks also, in the example illustrated, the planes paralleland alined and in similar positions (see Fig. 2) with their anchoring heads exposedandin driving or penetrating position's with respect to the'wood members a.

.The wood members a (by suitable mechani'sm) are then forcedtoward each other under. the necessary pressure or blows to drivethem onto the penetrating portions of thegfasteners and'tightly up against the stop and bracing. shoulders 1, of the fasteners, to

the. positions illustrated by Fig. 3.

penetrating anchoring portions of each fastener will then be completely buried in the twowood members with the ends of the fass tener bodies tightly pressed against the adjacent surfaces of the wood members. The

fasteners are then permanently locked to and in the wood members, by rotatingeach fastener on its longitudinal axis (which is coincident with the axis of each neck) a quarter turnor through an arc of approximately-ninety degrees. When the fasteners are thus rocked, their necks partially rotate in the holes-in the wood members formed by the penetrating heads, while the lateral env largements of said heads out, compress and wedge into said woodflaterally from said holes and form lateral anchoring sockets or cavities with uncut or unbroken. portions of the wood interposed between the blunt rear edges of the-anchoring heads and the ext'erior side facesof the wood members that lock the wood members against separation from thefasteners- Figs. 4 and 5, show the fasteners after they have beenturned in the woodto anchoring position, while Figs. 3 and 6, show the fasteners afterdriving into the wood but j'partial rotation. Of course, the fasteners j and, the wood members can be driventojean be applied, and according to Whether fasteners {embodying my invention are gfgether byhand applied power or, blows and the fasteners canbe turned tojanchoring po- 1 slition .by handtools or suitable implements, 'and'one or'more fasteners can be employed,

- .to couple together wood members, accord- I mg to the circumstances of each lnstance in view of -the many .usesto which different forms of fastenersl'embodying my. invention "formed withone neck and head, or with necks andheads at both ends as herein illustrated. i

The

fastener comprising before being locked orv anchored therein by Each fastener is composed of a rigid strong piece of metal formed to drive and penetrate wood (or equivalent material) underv "the necessary pressure or blows, and to cut its own anchoring cavity within the wood under the necessary rotating force, so that it is notnecessary to first prepare the wood by the formation of holes. and sockets to receive the fastener.

These fasteners are so formed as to rig idly hold the wood members to form a structural element or unit, as the members will be rigidly 'held'against independent" loosenessor twisting as well as against movement toward and from each other. v I

In Fig. 1, I show a structural unit inthe form of a hollow post for interior trim, embodying my present invention. The two Wood members a a of this unit constitute the pilasters of the post, and they are rigidly united by two rows of the fasteners 1,

hereinbefore described, while a wood block I), is fixed between the lower ends of the two pilasters a. The rows'of fasteners 1, are arranged longitudinally of the post adjacent'to the opposite edges thereof to pro vide the post with opposite edge grooves or sockets to receive the vertical edge stiles. of panel sections (between the inner faces of the pilasters a) while the bodies of the fasteners 1, form the floors of the grooves against which the vertical edges of the panel section stiles can abut. The post is hollow and the fasteners are so arranged that a post extension can extend down between the rows offasteners and will be guided thereby.

The post of Fig. 1,.can be economically produced according to the methodhereinbe fore described and will be exceedingly strong and rigid.

It is evident that various changes, modificationsand variations might'be resorted to without departing from the spirit and scope of my invention, and hence I do not wish to flimit myself to the exact disclosure hereof except as requiredv by the scope of the appended claims. V

What I claim is:

opposite end stop shoulders and at each end provided "with a projecting end extension consisting of a reduced neck having a penetrating and anchormgend head, said fastener adapted to be forced into wood members with said body in tight engagement with the surfaces thereof and with said exrotation, comprising a body having a reduced projecting neck. provided with an arrow-like end head for p'enetratingt-he a body forming wlngs.

wood and having a cutting-edge for: cutting anchoring cavities in the Wood rotation. l j

a 5. A fastener composed of a body pro vided with an end fastening projection adapted to be driven into Wood and formed on partial with a flattened laterally enlarged penetrat rug and anchoring point having an edge.

adapted to cut anchoring cavities. in the wood on partial rotation of the fastener.

a. Afastener composed of a body for1n-- lnga stop shoulder and provided w th an Ar fastener composed of a body pro (Mled at each end with an end fastenlng projection consisting of, a straight cylindrical neck reduced with respectto the body and having a penetrating point embodying diametrally opposlte laterally pro ect ng wings having blunt rear edges and inclined front cutting edges,

6. A fastener composed of an elongated body angular in cross section and-forming an. end face "and provided with an end fastening projection extending from said" face and consisting of a reduced straight cylindrical neck having a penetrating pointem bodying diametrically opposite pointed latorally projecting cutting and anchoring fastener composed of an elongated body forming a spacing and bracing mem-" her at its opposite ends formed With stop shoulders and projecting necks terminating in fastening projections having penetrating and anchoring points, said body formed to be partially rotated after said necks and points have been driven home, said points formed to cut anchoring cavities When thus partially rotated, substantially as described.

8. A fastener composed of a body at its opposite ends provided With reduced straight cylindrical alined necks having penetrating necks and points adapted to be driven into tion of the body. v

9. A fastener composed of a body having opposite edge shoulders and alined fastening projections provided With laterally enpoints, said body and projections being integral, said points formed to cut anchoring cavities in the Wood When partially rotated therein by said body, substantially as described.

10. A device for rigidly connecting a pair and anchoring points, said I 1 and buried in wood and said points adapted to be anchored in the Wood on partial rotalarged flattened. penetrating and anchoring of vwood members and. maintaining them spaced apart, conslstlng of a body forming opposite end stop shoulders and projections extending therefrom and forming necks and penetrating and anchoring heads, said heads and necks adapted to be forced into said members and said body adaptedtobe given apartial rotation, said heads constructed to fornr anchoring recesses in said members when the bcdy'is thus partially rotated.

In testimony whereof I aflixmy signature in the presence of tWo Witnesses.

HENRY KLEIN. \Vitnesses HENRY KURZMAN, Josnri-i C. KADANE.

flc-p iea'of this patent maylbe obtained for five cents eachyby addressing the Commissioner of Patents, i i i Washington, D; O. l 

